Tuesday, August 25, 2015

Concussions affect men and women differently

According to a study, concussions affect men and women differently.

New research suggests concussion may not significantly impair symptoms or cognitive skills for one gender over another, however, women may still experience greater symptoms and poorer cognitive performance at preseason testing. The study released today will be presented at the Sports Concussion Conference in Denver, July 24 to 26, hosted by the American Academy of Neurology, the world's leading authority on diagnosing and managing sports concussion. The conference will feature the latest scientific advances in diagnosing and treating sports concussion from leading experts in the field.

The study involved 148 college athletes from 11 sports at the University of Michigan in Ann Arbor. All had taken tests of learning and processing along with other measures of the brain's abilities, such as attention and working memory speed. Of the participants, 45 percent were female, 51 percent played a contact sport and 24 percent had experienced a concussion.

They had an average of 0.3 concussions, ranging from zero to four. Men and women were equally likely to have a history of concussion, even after researchers adjusted for the percentage who played contact sports.

Women who have had a history of at least one concussion do not score lower on computerized cognitive baseline testing. However, all women, regardless of concussion history, had greater symptoms, symptom severity and poorer cognitive performance than men at baseline. Women reported on average 1.5 more symptoms and scored three points higher on symptom severity than men. On a clinical reaction time task, women were 19 milliseconds slower to react than men. On cognitive tasks assessing processing speed, attention and working memory speed women scored on average seven percent below men with the greatest difference on processing speed (8.5 percent).

"More research is needed to confirm these results and to understand why women may have lower performance at preseason baseline. The difference in performance between genders should be of great interest to athletes, coaches, athletic trainers, and doctors who utilize baseline assessments to aide recovery protocols," said study author Kathryn L. O'Connor of the University of Michigan in Ann Arbor and a member of the American Academy of Neurology.

"This finding that cognitive skills were not significantly affected by having a concussion for either gender should be reassuring to athletes who have experienced a concussion and wonder about its later effects," O'Connor said.

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